Side bearing for cars.



PATENTED JULY 2, 1907.

L. W. BARBER. SIDBBEARING FOR CARS.

APPLIGATION FILED HAB. 24, 1906.

.llllll M m.. NNN- LEE W. BARBER, OF CHICAGO, ILLINOIS.

SIDE BEARING FOR CARS. I

Specification of Letters Patent.

Patented July 2, 1907.

Application filed March 24,1905. Serial No. 251,741.

To all whom Ait may concern:

Be it known that I, LEE W. BARBER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Side Bearings for Cars; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. l

My invention has for its object to provide an improved side bearing for cars and to this end it consists of the novel devices and combination of devices hereinafter described and defined in the claims.

In the accompanying drawings which illustrate the invention like characters indicate like parts throughout the several views.

Figure l is a plan shown with some parts broken away, illustrating my improved side bearing, applied in working position, the car bolster being removed. Fig. 2 is a transverse truck section taken on line x2 x2 of Fig. 1. Fig. 3 isa vertical section-taken on line x3 x3 of Fig. l. Fig. 4 is detail in elevation looking at the outer end portion of the improved side bearing, said side bearing being removed from working position; and. Fig. 5 is a plan view looking at the face of the lowerl part of the side bearing.. 1 V

The numeral l indicates the car bolster and the numeral 2 indicatesthe truck bolster, portions only of each are shown in drawings.

, The numeral 3 indicates the upper part, andthe nuy meral 4 indicatesthe lower partoffthe improved-side bearing, which parts are adapted to 'be bolted or otherwise rigidly secured, the former to the car bolster l, and

the latter to the truck bolster 2. These side bearings `are of course applied near the sides of the car, at a proper distance vfrom the pivotal center of the truck bolster 2, at which pivotal center the usual king bolt ,5 is applied in the usual way. l

The members 3 and 4 are formed with outwardly converging depressions that afford roller'seats 6, which roller seats 6 converge toward the axis of the king bolt 5, and are adapted to receive between them, that is be: tween the upperl and lower vertically alined seats, slightly conical bearing rollers 7, lwhich rollers are adapted to fit the -vertica'l lare of the upper and lower seats. Said seats 6, transversely of therollers,y have a from ahorizontal plane in oppositedirections from the bolster from friction.- This makes the return of the flare, that is, of course, much greater than the periph- 1 eral curve of the rollers. I A i As 'a leading feature of this invention the roller seats 6` are formed with flatl bearing surfaces, that diverge ward in respect to the horizontal plane, while the plate bearing .surfaces of the upper roller seats flare downward with respect to the horizontal plane. The bearing members and 4 are preferably formed with interlapping stop lugsf), at their outer extremities, which limit the extreme movements of the two bearing menibers, the one with respect to the other.

In side bearings for cars, two features are very desir- 'ment of the truck bolster with respect to the car bolster,

treme curves in a track; and second, a tendency t0 maintain the truck bolster and the carbolster in the same vertical plane, so that when running on 'a straight ltrack the car trucks will be kept in a straight line with the body of the car. With these arrangements of the beariiig surfaces of the roller seats, it results that in any of the possible` positions of the rollers,a given amount of pivotal' movement'of the one center bearing member with respect to the other, will cause the such' movement will take place under the constantresistance, as distinguished from the accelerated resistcurved seats to be employed. It therefore also follows that the amount ofpivotal movement whichnlay be permitted to theone bearing member, with respect to the other, is not limited by the lform of the lroller bea-ring seats and may beincreased to any extent sidered. Preferably the flanges at the outer lower poiare perforated at 10, so as to permi the car body will be raised pivotally, so. as to relieve the center bearing between the truck bolster and car so as to permit the trucks to adapt themselves te ex,

same amount of rise of the rollers, and consequently ance, such as would take place were cylindrical `or` found desirable or preferable, other things being eon.

tions of the roller seats of the lower lzfaaring member 4, sand and dirt to work out of the said seats, under the act-ion of the rollers.

Attention is here called to the fact that when alietrucks move pivotally with respect to the car body,

between the lines Z1 and Z2 fiares with respect to the I extremities of the seats beyond the lines Z2 and Z'are I The flat surfaces of the two lower roller seats flare upable, to`-wit:-Capability of a long oscillatory movetiuoks to positions parallel with the cer body. an'easy matter, under action of lthe W'eght of the load on the improved gid'bearings.

`\ Vl1et` I clim and. desire -to secul'e by'Letters Petent I of the United Stateg, is as follows: l

The combinatlonwith upper and lower merbers of side bearing, said members having radially disposed roller4 seats and interlappug'stop lugs, of loose laterally spaced conical rollers working between the coi'respnnding upper and'lower seats of sui members, subsinnt'inlly :n: de 10 scribed. 

